Reboulia hemisphaerica 42 
Rhabdoweisia denticulata 37 
Rhacomitrium canescens. .. .42, 65, 88 
" var. ericoides 88 
" fasiculare 37 
" Macounii 37 
Rhacopilopsis trinitensis no 
Rhizocarpon alboatrum 6 
Rhizogonium orbiculare no 
Rhodobryum ontariense 10 
" roseum 10, 51 
Rhynchostegium serrulatum. ... 12, 42 
Rhytidiadelphus triquetris . .12, 55, 65 
Rhytidium rugosum 65 
Riccardia latifrons 45 
" multifida 45 
" pinguis 45 
Riccia 81-86 
" Beyrichiana 25 
" Bischoffii 81 
" californica 25 
" canaliculata 84 
" dictyospora 25 
" Dinted 85 
" fluitans ^ 81-86 
" var. canaliculata . . 81 
" " fructifera 85 
" Frostii._ 82,84 
" Gougetiana armatissima . . 81 
" Huebeneriana 82-86 
" Huebeneriana var. pseudo- 
Frostii 84 
" McAllisteri 25 
" pseudo-Frostii. . . .82, 84, 85, 86 
" Sullivantii 82,84 
Ricciella fluitans 42, 84 
" Huebeneriana var. na- 
tans 82-84 
Ricciocarpus natans 42 
Rigodium dentatum 39 
Rhinodina constans 35 
" oreina 78 
Saelania caesia 109 
" glaucescens 49 
Sarcoscyphus confertus 25 
Scapania compacta var. Birotiana 95 
curta 47 
" glaucocephala 47 
" irrigua 47 
" nemorosa 47 
Schwetschkea usambarica 39 
Scorpidium scorpioides var. cuspi- 
datum. . . . 109 
Seligera 98 
" campy lopoda 49 
" recurvata pumila 37 
Sematophyllum flagelliferum no 
" leptocarpon cylin- 
dricum ... no 
" pilotrichelloides . . 39 
replicatum 39 
" roseum no 
Southbya nigrella 109 
Sphagnum acutifolium 87 
Sphagnum capillaceum 47, 65 
" capillaceum tenellum . 47 
" compactiim 47 
cuspidatum 47 
" Dusenii 47 
" fimbriatum 87 
" " var. arcti- 
cum 87 
" concin- 
num 87 
" fuscum 47. 65 
" Girgensohnii 47, 87 
" magellanicum 47 
" palustre 47 
" papillosum 47 
" platyphyllum 42 
" recurvum 47 
" " tenue 47 
" robustum 47 
" squarrosum 47 
" subbicolor 48 
" subnitens 87 
" subsecundum 42 
" " var. con- 
tortum 87 
" teres 48 
" " var. concinnum. . 87 
" Warnstorffii 48, 65 
" Wulfianum 48 
Sphenolobus exsectaeformis 47 
" groenlandicus 25 
" Hellerianus 47 
" Michauxii 47 
Sphinctrina turbinata 2 
Splachnum 59 
" ampullaceum 42 
Stereocaulon paschale 35 
" " conglomer- 
atum 35 
" tomentosum 35 
Stereodon arcuatus 12 
cupressiformis. ... 12, 56, 65 
curvifolius 12,43,65 
" imponens 12, 56 
lignicola 40 
" Lindbergii 56 
pallescens 56 
Patientiae 65 
" pratensis 56 
" recurvans 12, 56 
reptilis 12, 15, 56 
revolutus. 65 
Sticta amplissima 36, 105 
" pulmonaria 105 
" quercizans 37 
" Weigelii 37 
Swartzia Hagenii 19 
" montana 49 
Syrrhopodon durigolensis no 
" ligulatus. . ; 94 
Taxilejeunia debilis 40 
" densiflora 40 
" erosifolia 32 
" jamaicensis 40 
